Mark HCNI 533, Technical Manual

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55
EN
8.5 Troubleshooting by error code
8.5.1 E0 / EH 00 / F4 / EC 51 (EEPROM parameter error diagnosis and solution)
Description:
Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip.
Recommended parts to prepare:
• Indoor PCB
• Outdoor PCB
Troubleshooting and repair:
“Wall” Type Active Line R32 Refrigerant AC: 6. Troubleshooting
[6]-17
6.7 TROUBLESHOOTING BY ERROR CODE
YES
NO
6.7.1 E0 / EH 00 / F4 / EC 51 (EEPROM parameter error diagnosis and solution)
Troubleshooting and repair:
Description
: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip.
Recommended parts to prepare:
• Indoor PCB
• Outdoor PCB
Notes:
For certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric control
box should be replaced as a whole.
These pictures are only for reference, actual appearance may vary.
Troubleshooting and repair of compressor driven chip EEPROM parameter error and communication error
between outdoor main chip and compressor driven chip are same as F4 / EC 51.
Remarks:
EEPROM is a read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
The location of the EEPROM chip on the indoor and outdoor PCB is shown in the following two images:
Shut off the power supply and
turn it on 2 minutes later.
Is it
still displaying the
error code?
The unit is operating normally.
Replace the indoor main PCB (E0 / EH 00) /
the outdoor main PCB (F4 / EC51).
Remarks:
EEPROM is a read-only memory whose contents can be erased and reprogrammed using a pulsed
voltage. The location of the EEPROM chip on the indoor and outdoor PCB is shown in the following two
images:
“Wall” Type Active Line R32 Refrigerant AC: 6. Troubleshooting
[6]-17
6.7 TROUBLESHOOTING BY ERROR CODE
YES
NO
6.7.1 E0 / EH 00 / F4 / EC 51 (EEPROM parameter error diagnosis and solution)
Troubleshooting and repair:
Description
: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip.
Recommended parts to prepare:
• Indoor PCB
• Outdoor PCB
Notes:
For certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric control
box should be replaced as a whole.
These pictures are only for reference, actual appearance may vary.
Troubleshooting and repair of compressor driven chip EEPROM parameter error and communication error
between outdoor main chip and compressor driven chip are same as F4 / EC 51.
Remarks:
EEPROM is a read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
The location of the EEPROM chip on the indoor and outdoor PCB is shown in the following two images:
Shut off the power supply and
turn it on 2 minutes later.
Is it
still displaying the
error code?
The unit is operating normally.
Replace the indoor main PCB (E0 / EH 00) /
the outdoor main PCB (F4 / EC51).
Notes:
For certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric
control box should be replaced as a whole. These pictures are only for reference, actual appearance
may vary.
Troubleshooting and repair of compressor driven chip EEPROM parameter error and communication
error between outdoor main chip and compressor driven chip are same as F4 / EC 51.